1. What is an evolutionary track, and how can such tracks help us interpret the H-R diagram? 2. Draw the pre–main-sequence evolutionary track of the Sun on an H-R diagram. Briefly describe what was...

1. What is an evolutionary track, and how can such tracks help us interpret the H-R diagram?

2. Draw the pre–main-sequence evolutionary track of the Sun on an H-R diagram. Briefly describe what was occurring throughout the solar system at various stages along this track. (You may find it useful to review Chapter 11.)